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WO/2001/002324A1 |
The invention provides a high temperature metathesis process for the metathesis of Fischer-Tropsch olefins in the C¿5? to C¿15? range, said metathesis process including the step of subjecting a Fischer-Tropsch olefin feedstock in the C...
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WO/2000/078894A1 |
A process for cracking an olefin-containing hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising passing a hydrocarbon feedstock containing one or more olefins through a reactor containin...
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WO/2000/066263A1 |
There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeo...
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WO/2000/061529A1 |
A process for producing 2,6-dialkylnaphtalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphtalene isomers, monoalkynaphtalene isomers, polyalkylnaphtalenes, and naphta...
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WO/2000/043335A1 |
This invention relates to a process for isomerizing paraffins comprising the step of contacting a feed containing paraffins with a catalyst comprising a synthetic porous crystalline material, designated MCM-68, which exhibits a distincti...
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WO/2000/043316A1 |
This invention relates to a new synthetic porous crystalline material, designated MCM-68, a method and novel polycyclic organic cation for its preparation and its use in catalytic conversion of organic compounds. The new crystalline mate...
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WO/2000/043466A1 |
A process for catalytic cracking of a hydrocarbon feedstock feeds to produce an enhanced yield butylenes and isobutane comprises contacting the feedstock with a catalyst composition comprising MCM-68. The MCM-68 may be used as the primar...
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WO/2000/035838A1 |
A new process for the hydrodealkylation of ethylbenzene and the isomerization of xylenes at low pressure and at a low hydrogen to ethylbenzene mole ratio as well as a low hydrogen to hydrocarbon feed mole ratio using a catalyst comprisin...
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WO/2000/026163A1 |
Propylene and ethylene are made by heating a mixture of C4 and/or C5 olefins with a zeolite catalyst that has channels large enough to admit the C4 and C5 olefins and large enough to allow propylene and ethylene to diffuse out, but small...
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WO/2000/018853A1 |
A catalyst and an improved process for producing olefins by catalytic naphtha cracking are described. The process provides relatively higher yields over a commercially important range of naphtha conversion, while providing about the same...
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WO/2000/015339A1 |
Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation....
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WO/2000/014037A1 |
An on-line method of synthesizing or regenerating catalysts for autothermal oxidation processes, specifically, the oxidation of paraffinic hydrocarbons, for example, ethane, propane, and naphtha, to olefins, for example, ethylene and pro...
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WO/2000/014035A2 |
A process and catalyst for the partial oxidation of paraffinic hydrocarbons, such as ethane, propane, naphtha, and natural gas condensates, to olefins, such as ethylene and propylene. The process involves contacting a paraffinic hydrocar...
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WO/2000/014036A1 |
This invention relates to a process for the production of olefins from a hydrocarbon, said process comprising the steps of: a) providing a first feed stream comprising a gaseous fuel and an oxygen-containing gas, b) contacting said first...
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WO/2000/013788A2 |
The objective of the present invention is a polyvalent bifunctional catalyst and the process of its realisation. A catalyst characterized by the fact that it contains, over a TiO¿2? support, an oxide or a mixture of metallic oxides of M...
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WO/2000/010948A1 |
A process for producing ethylene and propylene from a hydrocarbon feed material through catalytic conversion which comprises: contacting in a reactor a hydrocarbon feed material comprising at least 20 wt.% at least one C¿4-12? olefin wi...
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WO/2000/010944A1 |
A process is described for increasing the efficiency of $i(para)-xylene production using a two stage isomerization sequence. In the first stage of the process, a C¿9??+¿ aromatics feedstock is subjected to ethylbenzene conversion and x...
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WO/2000/005185A1 |
The method of the present invention is a microwave bond cleavage of a first hydrocarbon compound, the first hydrocarbon compound in a liquid phase and substantially non-aqueous, to a second compound having a shorter carbon chain than the...
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WO/1999/064541A1 |
An extruded, elongated body (10) has a continuous, refractory, metal or ceramic network encasing a plurality of parallel reactor tubes (16) that extend the length of the network, the network being capable of withstanding temperatures abo...
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WO/1999/057085A1 |
A process for selectively producing C¿2?-C¿4? olefins from a catalytically cracked or thermally cracked naphtha stream. A mixture of the naphtha stream and a stream of steam is fed into a reaction zone where it is contacted with a cata...
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WO/1999/057225A1 |
A process for selectively producing olefins containing 3 carbons from a catalytically cracked or thermally cracked naphtha stream. The process involves reacting the cracked naphtha in the presence of a catalyst containing from about 10 t...
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WO/1999/057086A1 |
A process for selectively producing C¿2?-C¿4? olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt.% of a crystalline zeolite having...
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WO/1999/057087A1 |
The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the grou...
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WO1999028412A9 |
A method for reducing coke formation from pyrolysis of hydrocarbon reactant in a reactor (Figure 1), comprising the steps of forming a hydrocarbon reactant-water-based additive mixture, and introducing the mixture to the reactor (Figure ...
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WO/1999/041329A1 |
A method and reactor system for catalytic hydrotreating and hydrocracking of liquid hydrocarbon feedstocks in order to produce a feedstock having a reduced contaminant level are disclosed. A feedstock (11) is introduced into a first reac...
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WO/1999/037597A1 |
Light olefins are produced from a hydrocarbon feedstock (12) by a steam pyrolysis reaction (10) in the presence of small quantities of essentially pure oxygen (24,26) and selected catalytic solids (18,20) to enhance the steam pyrolysis r...
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WO/1999/035110A1 |
A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout...
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WO/1999/032421A1 |
In a process for producing $i(meta)-xylene, a hydrocarbon feedstream comprising at least 5 wt.% ethylbenzene and at least 20 wt.% $i(meta)-xylene is contacted with a molecular sieve catalyst under ethylbenzene conversion conditions suffi...
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WO/1999/029805A1 |
A process for the production of propylene from an olefinic feedstock containing one or more olefins of C¿4? or greater, the process comprising contacting the olefinic feedstock with a catalyst of the MFI-type having a silicon/aluminium ...
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WO/1999/028032A1 |
The preparation of zeolite bound zeolite comprising zeolite core crystals other than MFI structure zeolite which are bound by MFI structure type zeolite and the use of the zeolite bound by MFI structure type zeolite prepared by the proce...
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WO/1999/028278A1 |
The invention concerns a method for making norbornene from dicyclopentadiene (DPCD) and ethylene characterised in that it consists in subjecting DCPD to partial monomerisation into CPD by pre-heating: at a temperature between 140 °C and...
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WO/1999/021939A1 |
An improved method for cracking a hydrocarbon feedstock comprising passing the feedstock through furnace tubes at high temperatures. The improvement comprises tubes comprised of a nickel-cobalt alloy containing: nickel; 27.0 - 33.0 weigh...
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WO/1999/019278A1 |
The present invention relates to a process of preparing 2,6-dialkylnaphthalene comprising steps of alkylating monoalkylnaphthalene with an alkylating agent in an alkylation zone and transalkylating naphthalene with dialkylnapthalene othe...
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WO/1999/012874A1 |
A method of reclaiming styrene from polystyrene-containing materials wherein a solution of polystyrene from such materials in a solvent is heated in distillation equipment to depolymerize the polystyrene and produce a styrene fraction an...
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WO/1999/009230A1 |
A heating furnace tube, a method of using the same and a method of manufacturing the same which have been developed with a view to eliminating inconveniences occurring when a carbon-containing fluid is made to flow in the heating furnace...
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WO/1998/056874A1 |
The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising mixing a hydrocarbon feedstock with a diolefin to form a mixture; and thereafter contracting the mixture with a zeolite ...
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WO/1998/056740A1 |
The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising the steps of thermally converting the hydrocarbon feedstock to produce an effluent; quenching the effluent to produce a ...
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WO/1998/056877A1 |
The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising the steps of first contacting the hydrocarbon feedstock with a light olefin producing cracking catalyst and subsequently...
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WO/1998/056738A1 |
An isomerization process for C�4? to C�15? olefins carried out by the reaction of C�4? to C�15? olefins, having a first skeletal distribution, with aromatic compounds under alkylation conditions to produce an alkylated aromatic p...
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WO/1998/056741A1 |
A heavy aromatics feed is converted to lighter aromatics products, such as benzene, by contacting a C�9?+ aromatics fraction and toluene over a first catalyst comprising a zeolite having a constraint index ranging from 0.5 to 3 and a h...
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WO/1998/056873A1 |
The invention provides an improvement in processes for cracking hydrocarbons to prime olefins, ethylene and propylene, which comprises applying a positive temperature gradient across a catalyst contact zone. The temperature gradient may ...
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WO/1998/054091A1 |
The invention relates to a microporous crystalline material of zeolite nature and known as ITQ-3 to the process for preparing such material and its utilization in processes of separation and transformation of organic compounds. In a calc...
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WO/1998/051409A1 |
A novel zeolite catalyst comprising an acid treated zeolite impregnated with zinc and at least one other metal selected from the group consisting of Group 4B, Group 6B, Group 3A, Group 4A and Group 5A of the periodic table of elements, a...
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WO/1998/043932A1 |
A new process for the hydrodealkylation of ethylbenzene and the isomerization of xylenes at low pressure and at a low hydrogen to ethylbenzene mole ratio as well as a low hydrogen to hydrocarbon feed mole ration using a catalyst comprisi...
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WO/1998/033587A1 |
A heat exchanger is formed of two plates or stages (4 and 6), the stage (4) being on top of the stage (6) and a plurality of such heat exchangers being stacked one on another. The stage (4) has an inlet opening (14), an inlet passage (28...
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WO/1998/027031A1 |
A two-stage process for obtaining a substantial amount of olefinic product from a residua feedstock includes a first stage and a second stage. The first stage, having a short residence time, includes a thermal process unit containing a r...
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WO/1998/022213A1 |
The invention concerns a NU-86 zeolite, containing silicon, and at least one element T selected from the group formed by aluminium, iron, gallium and boron, preferably aluminium, characterised in that the element T has been extracted fro...
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WO/1998/016468A1 |
A process for converting hydrocarbons by contacting a hydrocarbon feedstream under hydrocarbon conversion conditions with a large crystal zeolite catalyst. The large crystal zeolite of the catalyst used in the hydrocarbon conversion proc...
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WO/1997/046636A1 |
A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron a...
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WO/1997/045197A1 |
There is provided a zeolite bound zeolite catalyst which does not contain significant amounts of non-zeolitic binder and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The catalyst comprises first zeo...
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